Add objdiff setup

This is intended more as a proof of concept as we figure things out
than the start of an actual decompilation in this repository.  Target
object files are currently "bring your own."

src/Core.hpp

@@ -1,182 +0,0 @@
-#ifndef CORE_HPP
-
-
-typedef bool32 unsigned; // Need to find a clean way of representing this
-
-typedef Mat4 D3DVECTOR4[4]; // Should probably be defined somewhere else
-
-struct GraphicsPerformanceCounters { // Would come from header with Graphics COM object
-	unsigned fps;
-	unsigned trianglesPerSecond;
-	unsigned frameTriangleCnt;
-	unsigned unknown0xC;
-	unsigned unknown0x10;
-	unsigned unknown0x14;
-}
-
-// Base class of most objects
-class GameObj {
-	enum GameObjFlags {
-		GOF_SOMETHINGLINKED_ALTLIST    = 1 <<  0,
-		GOF_SKIPDRAWCHILDREN           = 1 << 16,
-		GOF_SKIPDRAWASCHILD            = 1 << 18,
-		GOF_SKIPDRAWASROOT             = 1 << 22,
-		GOF_EXCLUDEFROMSOMETHINGLINKED = 1 << 30,
-		GOF_DELETEAFTEREXEC            = 1 << 31
-	} flags;
-
-	// Position in g_game->objects array
-	// Different indices and ranges are dedicated to different kinds of
-	// objecs.
-	enum GameObjIndex {
-		OBJ_NOTINDEXED = -1, // Not stored in array
-		OBJ_DIRECTOR   =  0
-		// TODO
-	} index;
-
-	unsigned  otherBitfield;
-	float     reverseSortKey; // Sign flipped to produced sortKey
-	unsigned  sortKey;        // Four-level key, one byte each
-	D3DVECTOR someTranslation;
-
-	// Links forming a tree of objects
-	GameObj * parent;
-	GameObj * firstChild;
-	GameObj * prevSibling;
-	GameObj * nextSibling;
-
-	// Some kind of linked list walked during rendering
-	GameObj *     somethingLinkedNext;
-	GameObj * *   somethingLinkedPrevNext;
-	GameObj * * * somethingLinkedEndNextPtr;
-
-	// Another linked list sort of arrangement
-	GameObj * someKindOfNextObj;
-
-public:
-	virtual ~GameObj();
-	GameObj(GameObj * parent, GameObjIndex index, GameObjFlags flags);
-
-	// Each frame, one of these trios of methods is called depending on
-	// which state the game is in
-	// Default implementation of each does nothing; inheriting objects
-	// override these methods to run some code during each phase of each
-	// frame.
-	virtual void execDefault();
-	virtual void postExecDefault();
-	virtual void drawDefault();
-
-	virtual void execEvent();
-	virtual void postExecEvent();
-	virtual void drawEvent();
-
-	virtual void execCoveredPause();
-	virtual void postExecCoveredPause();
-	virtual void drawCoveredPause();
-
-	virtual void execFreezeCam();
-	virtual void postExecFreezeCam();
-	virtual void drawFreezeCam();
-
-	virtual void execUncoveredPause();
-	virtual void postExecUncoveredPause();
-	virtual void drawUncoveredPause();
-
-	// TODO: non-virtual methods
-};
-
-// Top-level globally-accessible "god object" that runs the main loop and
-// provides global access to most other objects and many variables
-extern class Game {
-	char         unknown0x4[4];
-	unsigned     unknown0x8;
-	unsigned *   unknown0xC;
-	int          initState;
-	unsigned     unknown0x14;
-	bool32       drawProfilingInfo;
-	int          unknown0x1C;
-	bool32       logosStarted;
-	bool32       fatalErr;
-
-	D3DCOLOR     colour;
-	D3DCOLOR     ambientColour;
-	D3DCOLOR     shadowColour;
-	D3DCOLOR     bgColour;
-	D3DCOLOR     bgColourFallback;
-	bool32       useFallbackBgColour;
-
-	// Game state used to select GameObj methods to call in main loop
-	// If multiple states are acivated, the precedence is
-	//     coveredPause > Event > FreezeCam > UncoveredPause > Default
-	bool32       coveredPause;   // Game paused with world not visible
-	bool32       event;          // Events (cutscenes)
-	bool32       freezeCam;      // Time-frozen camera shots
-	bool32       uncoveredPause; // Game paused with world visible, or
-	                             // automatic pause at start of mission
-
-	bool32       setCoveredPauseNextFrame;
-	bool32       unsetCoveredPauseNextFrame;
-	bool32       setEventNextFrame;
-	bool32       unsetEventNextFrame;
-	bool32       setFreezeCamNextFrame;
-	bool32       unsetFreezeCamNextFrame;
-	bool32       setUncoveredPauseNextFrame;
-	bool32       unsetUncoveredPauseNextFrame;
-
-	unsigned     unknown0x70;
-	bool32       skipDraw;
-	int          zeroedByExec;
-	GraphicsPerformanceCounters perfCounters;
-
-	enum DrawMode {
-		DRAW_YES,
-		DRAW_WAITVBLANK,
-		DRAW_NO
-	} drawMode;
-
-	// Globally accessible objects and variables
-	GameObj  *   objects[7668];
-	unsigned     globals[461]; // Items may be any 32-bit type, e.g. ptr
-
-	GameObj  *   somethingLinkedBHead;
-	GameObj  * * somethingLinkedBEndNext;
-
-	GameObj  *   somethingLinkedAHead;
-	GameObj  * * somethingLinkedAEndNext;
-
-	GameObj  *   sortedLinkedListHead;
-	GameObj  * * sortedLinkedListEndNext;
-
-	GameObj  *   linkedListsByKeyHeads  [256];
-	GameObj  * * linkedListByKeyEndNexts[256];
-
-	unsigned     unknown0x87B4;
-
-	LARGE_INTEGER execPerfCount;
-	LARGE_INTEGER drawPerfCount;
-
-	unsigned     unknown0x87C8;
-	unsigned     unknown0x87CC;
-	unsigned     frameCnt1;
-	unsigned     unknown0x87D4;
-	unsigned     unknown0x87D8;
-	GameObj  *   rootExecObj;
-	int          frameCnt2;
-	int          frameCnt3;
-	unsigned     gameObjCnt;
-	GameObj  *   rootDrawObj;
-	int          unknown0x87F0;
-	int          unknown0x87F4;
-	Mat4         unknown0x87F8;
-	unsigned     unknown0x8838;
-	unsigned     unknown0x883C;
-
-public:
-	Game(unsigned *, unsigned);
-	virtual ~Game();
-
-	// TODO: methods
-} * g_game;
-
-
-#endif